The last $20$ years have witnessed the disappearance of $.............$ species.

Choose the incorrect pair of extinct animal and their country from the following.

The impacts of loss of biodiversity may lead to:
$I$. Lowered resistance to environmental perturbation
$II$. Decrease in plant production
$III$. Increased variability in ecosystem processes like water use,pest/disease cycle,and plant productivity
$IV$. Increase in plant production
Choose the correct option.

If the current rate of species extinction continues,what percentage of all species on Earth will become extinct within the next $100$ years (in $\%$)?

What does 'Red' indicate in the $IUCN$ Red List $(2004)$?

According to $IUCN$ Red List $(2004)$ documents,how many species have become extinct in total?